| Computer Code: |
MOA |
Preferred Map Code: |
notEntered |
| Status Code: |
Index Level |
| Age range: |
Caradoc Series (O4)
— Caradoc Series (O4) |
| Lithological Description: |
[Obsolete: use BFA] Thick flows of porphyritic andesite and dacite, some with garnet phenocrysts, separated by thin interbeds of volcaniclastic sediments. |
| Definition of Lower Boundary: |
Not defined. |
| Definition of Upper Boundary: |
Defined by base of Dunnerdale Formation (bedded volcaniclastic sediments). |
| Thickness: |
Not defined. |
| Geographical Limits: |
Not defined. |
| Parent Unit: |
none recorded or not applicable
|
| Previous Name(s): |
Mosedale Andesites [Obsolete Name and Code: Use MOA]
(-3556)
|
| Alternative Name(s): |
none recorded or not applicable
|
| Stratotypes: |
| Type Area |
In the vicinity of Wrynose Bottom, Duddon Valley, Cumbria. |
| Type Area |
In the vicinity of Mosedale, Duddon Valley, Cumbria. |
| Reference(s): |
| Hartley, J J. 1932. The Volcanic and other Igneous rocks of Great and Little Langdale, Westmorland: with notes on the Tectonics of the district. Proceedings of the Geologists' Association, Vol.43, p.32-69. |
| 1:50K maps on which the lithostratigraphical unit is found, and map code used: |
|
E038
|
